14-3 (Individual or component costs of capital) Compute the cost of capital for the firm for the following

14–3. (Individual or component costs of capital) Compute the cost of capital for the firm for the following:
a. A bond that has a $1,000 par value (face value) and a contract or coupon interest rate of 11%. The bonds have a current market value of $1,125 and will mature in 10 years. The firm’s marginal tax rate is 34%.
b. A new common stock issue that paid a $1.80 dividend last year. The firm’s dividends are expected to continue to grow at 7% per year forever. The price of the firm’s common stock is now $27.50.
c. A preferred stock that sells for $125, pays a 9% dividend and has a $100 par value that is selling at par.
d. A bond selling to yield 12% where the firm’s tax rate is 34%.